{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4210-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4210-6","canonicalUrl":"https://aoctrl.com/siemens/5SY4210-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4210-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4210-6, 2-pole miniature circuit breaker, B-curve, 10 kA (IEC 60898-1) / 20 kA (IEC 60947-2), 400 V AC, 60 V DC, 2 MW, IP20.","salesMarkdown":"## Siemens 5SY4210-6 SENTRON MCB — 2-Pole B-Curve, Dual-Rated Breaking Capacity It is rated for 10 kA breaking capacity per IEC 60898-1 and 20 kA per IEC 60947-2, meaning it can safely interrupt fault currents up to 20 kA in industrial panel applications where the higher standard applies. The 400 V AC rating covers most three-phase distribution, while the 60 V DC rating (72 V max) handles control-circuit protection. This is a current-production part — no lifecycle concerns for a BOM freeze. Don't use it for motor-starting duty where D-curve is needed. The dual breaking capacity (10 kA per IEC 60898-1, 20 kA per IEC 60947-2) means this breaker meets both residential and industrial standards; the 20 kA figure is the one that matters for a 400 V industrial panel with high fault current available. The DC rating of 15 kA per IEC 60947-2 covers DC distribution up to 72 V. The quick-assembly system and any-position mounting simplify panel layout. ## Standards and Approvals — What They Certify This MCB carries approvals under IEC 60898-1 (household-type MCB), IEC 60947-2 (industrial circuit-breaker standard), and UL 1077 / CSA C22.2 No. 235 (supplementary protectors for North America). The UL 1077 rating is 5 kA at AC — that's the supplementary protector rating, not the full branch-circuit rating. Halogen-free and silicon-free construction means no corrosive off-gassing in a sealed enclosure.","metaTitle":"Siemens 5SY4210-6 SENTRON MCB, 2P B-Curve, 10 kA IEC, 20 kA","metaDescription":"Siemens 5SY4210-6 SENTRON miniature circuit breaker, 2-pole, B-curve, 10 kA per IEC 60898-1, 20 kA per IEC 60947-2. Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60898-1, IEC / EN 60947-2 / UL1077","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"2P","Number Of Poles":"2","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"400 V","at DC rated value":"60 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Energy Limitation Class":"3","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"2","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"B","according to EN 60898 rated value":"10 kA","according to IEC 60947-2 rated value":"20 kA","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","Type Of Voltage Of The Operating Voltage":"AC","at DC according to IEC 60947-2 rated value":"15 kA","Value Range Of The Supply Voltage Frequency":"50/60 Hz","operating voltage at DC rated value maximum":"72 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","at AC according to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","supply voltage with single-phase operation at AC rated value":"230 V","power loss [W] for rated value of the current at AC in hot operating state per pole":"1.3 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$20.32","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=146985&mlfb=5SY4210-6","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4210-6/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SY4210-6?","answer":"10 kA per IEC 60898-1, 20 kA per IEC 60947-2 at 400 V AC, and 15 kA per IEC 60947-2 at DC up to 72 V. Under UL 1077 it is rated 5 kA."},{"question":"What is the tripping curve of the 5SY4210-6?","answer":"B-curve, which trips at 3 to 5 times rated current. Suitable for resistive and general-purpose loads, not motor starting."},{"question":"Where can I buy the 5SY4210-6 and get current pricing?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4210-6","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/5SY4210-6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}